I flashed the 0.6.25 one.
Phone works great, and it even scores 15700 on Antutu, which is even more than in 4.3 roms!
I installed the following: Pimp my rom, where I activated some tweaks to save battery and improve performance, Greenify, to make the phone smoother and save battery, Xposed framework to additionally tweak status bar, Metamorph, in which I installed a JB theme for the navigation bar, and Screen Standby, which turns the screen on/off when it detects an HDMI connection.
On top of that, I installed Google Now and a 5x4 motoblur launcher from the Atrix HD's thread. Now the dock shows the icons only and the search bar is gone, allowing another row of space to install widgets.
And I must say, the phone is working amazingly, lapdock works on full resolution, and I am no longer interested in a fully working webtop/lapdock. My phone already has it.
You guys should downgrade (it's more an upgrade than a downgrade if you want lapdock lol) to ICS and try to tweak it. I'm in love with it.